"I'm a gunslinger now."

Samuel L. Jackson let some spoilers slip for Captain Marvel and Avengers: Endgame in a recent interview from the set of Captain Marvel with ET.

Note that SPOILERS are ahead for Captain Marvel and Avengers: Endgame. Continue at your own risk.

In the interview, Jackson confirmed that Captain Marvel can time travel.

When asked why he thinks Captain Marvel is the right character to headline her own movie in the MCU, Jackson responded with the strength and capabilities Brie Larson's character holds.

"She’s pretty much the strongest character -- in terms of someone with powers are able to do things -- in the Marvel universe," Jackson said. "So, for Carol Danvers to be that person and for Brie to become that person, it's gonna be a dynamite thing. I mean, [the Avengers] are up against some really, really tough odds right now -- we saw throughout Infinity War -- so now we know that we need something that's as powerful as Thanos. And at some point, we'll find out how powerful she is and all the things that she's capable of. She's one of the few people in the Marvel universe that can time travel, so..."

Jackson also hinted that the Tesseract (also known as the Space Stone – one of the six Infinity Stones) may make an appearance in Captain Marvel.

"And we're actually entering a ship that belonged to a doctor from Carol Danvers' past. She's trying to find some answers to what happened, why he was on Earth and what that whole power core thing-- Seems like the Tesseract has been the constant in all these movies," Jackson said.

In an interview with THR, Jackson mentioned he has no plans for retiring his character of Nick Fury in the MCU, despite his nine-picture deal with Marvel being nearly complete.

Jackson said he would be happy to play the role of Fury into his 80's. "I could be the Alec Guinness of Marvel movies," he said.

The most challenging part for him to stay in the MCU could be salary negotiations, as THR reports his quote has climbed significantly since his original deal in 2008. In 2017, he was reportedly paid $5 million for his role in Kong: Skull Island.